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#     http://www.apache.org/licenses/LICENSE-2.0
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import warnings


class ExperimentalFeatureWarning(UserWarning):
    """Warning raised when using experimental features that may change without notice."""


warnings.warn(
    "You are importing from 'physicsnemo.experimental'. The APIs in this namespace are experimental, under active development, "
    "and may change without notice. Expect possible back-compatibility breaking changes and only partial test coverage.",
    ExperimentalFeatureWarning,
    stacklevel=2,
)
